Scripting
Vim Stuff
http://objectmix.com/editors/149639-refactoring-vim-smart-function-variable-renaming.html
https://github.com/ecomba/vim-ruby-refactoring
http://stackoverflow.com/questions/3063576/ruby-refactoring-in-vim
http://stackoverflow.com/questions/597687/changing-variable-names-in-vim
http://justinram.wordpress.com/2010/12/31/vim-ruby-refactoring-rename-local-variable/